NEW Cassin and Software Screenshot AK


Cassini Total Corneal Astigmatism helps cataract surgeons to better understand corneal properties in order to improve outcomes and increase premium patient volume.

Cassini logo small 3

Cassini – Better for your Patients

Cassini is a first-of-its-kind anterior segment ocular diagnostic device based on Colour LED Technology. It enables superior diagnosis for corneal astigmatism, contact lens fitting, dry eye analysis and surgical planning including refractive surgery, cataract surgery and corneal transplant. And, all patients benefit, also those with dry eyes and irregular corneas.

Cassini Banner 3

True Specifications

True Axis

  • Multicolor Point-to-point, LED ray-tracing imaging combined with 2nd Perkinje imaging technology
  • Axis repeatability within 3 degrees
  • Total Corneal Astigmatism Analysis – Anterior, Posterior and Total

True Magnitude

  • Diopter range 4.00D – 171.00D
  • Display astigmatism data dynamically and per zone
  • Keratometric indices display in Diopters and millimeters
  • Astigmatism data display for Anterior, Posterior, Total and Cassini Total Equivalent

True Capture

  • Instantaneous Auto Capturing with joystick positioning
  • Measurement Quality Factor parameter
  • White-to-White (HVID)
  • Auto Photopic pupil detection
  • Topographic indices: Shape factor, eccentricity, Asphericity, form factor
  • Keratoconus alarming parameters: Surface Asymmetry Index, Surface Regularity Index

True Accuracy

  • 679 LED lights with more than 129,000 points analyzed
  • Total corneal coverage up to 10.00 mm outer diameter

True Capture

  • Pupillometry programs: Mesopic & Photopic
  • External Ocular Photography
  • Topographic maps – Axial, Refractive, Tangential, Elevation, High Order Aberrations, Recorded HD image
  • Multiple color spectrum and scale options
  • Auto Iris and Vessel registration
  • Incorporated Patient management program
  • Connectivity: Femto second laser, Guidance systems, USB, Print options, PDF, JPG, PNG, 3rd party output connectivity and Clinical Batch Export functionality
Cassini Size

True Technology

swissmed cassini technology

How does it actually work?

Cassini technology employs red, green and yellow LEDs that are each positioned in a unique relationship to four of its neighbors, giving each one a ’gps-like’ coordinate. Cassini uses the ray-tracing principle to measure the relative position of each point, using the three different colors as ‘triangulation’ points. An elevation increases the distance between points (x) and a depression decreases the distance between points (y). This is displayed in the figure.

Because Cassini does not use edge detection in its measurement algorithms, smeared or double reflected LEDs can not skew the results in any direction. This allows the Cassini to effectively image all corneas from regular to highly irregular, and dry eyes.

True Central Coverage – No Central Scotoma

TRUE COVERAGE _ no central scotoma1

The multi-colored LED coverage is equal across the entire cornea, leaving no space for central scotoma.

True Axis – True Magnitude

CASSINI 3 DEGRESS_Axis eye 021

The accurate axis and magnitude of astigmatism plays a vital part in the correct selection and positioning of a toric IOL.

True Corneal Shape Analysis


Cassini measures the axis of astigmatism precisely.
∆ Cassini <3˚


Cassini measures the magnitude of astigmatism reliably within clinical margins ∆ Cassini <2˚


Cassini offers instantaneous and precise data capture
∆ Cassini 0 sec


Submicron accuracy due to color LED triangulation technology. ∆ Cassini <0.8 µM



Full suite of examinations


First-time right image capture


Create your own overview

Cassini offers a full suite of examinations required for toric and multifocal IOL implantation. This includes corneal topography, mesopic and photopic pupillometry as well as full color photography for diagnostic purposes.
The alignment guidance tool is intuitive for easy, fast and correct image capture. Color changes indicate the degree of correct alignment. The quality factor is imprinted on each captured image.

Get a full overview from captured image with true axis details, to elevation maps, tangential (instantaneous) curvature, axial curvature, refractive power, and Zernike terms overview, as well as full keratometry and keratoconus indices. Differential maps can be chosen for any two exams.

The Premium IOL Opportunity

Premium IOL market to nearly double in next 5 years


There is a huge global unmet need for improved vision correction during cataract surgery. With the total volume of cataract surgeries rising to approximately 30 million per year in 2030, more than 50% of these patients could benefit from astigmatism correction.

The challenge of determining the exact axis of astigmatism for cataract surgery

Cassini update Axis Eye 08132015 copy

The expectations and demands of patients have risen in recent years and the search for perfection becomes critical, especially when it comes to astigmatism correction.

Getting the Axis Right


Axis repeatability in complicated corneas



Total Corneal Astigmatism

Cassini uses patented multi-colored LED point-to-point ray tracing to provide a GPS-like analysis of the cornea along with high-resolution images utilized for surgical guidance. The unique measuring principle enables highly accurate and repeatable measurements of the Total Corneal Astigmatism.


Cassini provides critical information to properly select the power and position of Toric intraocular lenses.

2nd PURKINJE_cornea eye1

Increase Your Confidence

Addressing the four most common problems when correcting astigmatism*

POST - OP_ Increase your confidence1

The accurate post-op Cassini measurements enable the surgeon to optimize the Surgically Induced Astigmatism (SIA)

CORRECT TORC ALIGHNMENT_Increase your confidence1

Based on highly accurate measurements and marking, the Toric alignment can be done with high level of confidence

4 MOST COMMON PROBLEMS_Increase your confidence1
PRE - OP_ Increase your confidence1

With it’s accuracy and precision, Cassini reduces pre-operative measurements errors


ACCURATE MARKINGS_ Increase your confidence1

Along with real time eye-tracking systems such as TrueGuide**, Cassini can eliminate marking errors

Drive More Toric Procedures


Your opportunity to expand

Most people have astigmatism to some extent. A study of more than 6,000 cataract patients confirms that over 50% of cataract patients have a level of astigmatism that falls within the range correctable by a Toric IOL. That means that a premium IOL is an excellent option for a significant number of your cataract patients.


True data increases your confidence in expanding your premium procedure volume.

Cassini Integrates Seamless with LensAR Femtosecond Laser Systems

Orlando, FLA., 01 April, 2015 – LENSAR, Inc., a global leader in next generation femtosecond laser technology for refractive cataract surgery, today announced it has received 510k clearance from the U.S. Food and Drug Administration (FDA) for a suite of five new application technologies integrated into the company’s flagship product, the LENSAR Laser System. The LENSAR Laser System with Streamline™ is the first femtosecond laser cataract platform to enable automation of several surgical procedure planning and execution elements with the introduction of five new application upgrades that include:

  • Wireless integration with the Cassini Corneal Shape Analyzer
  • Iris registration
  • Cataract density imaging
  • Customized fragmentation patterns
  • Arcuate incision planning

Cassini Lensar

“The addition of the Streamline advanced technology suite solidifies our LENSAR Laser System as the femtosecond platform of choice for today’s refractive cataract surgeon,” said LENSAR CEO Nicholas T. Curtis. “The five distinct upgrades to the platform include innovative integration of functions unique to the LENSAR Laser System that, for the first time, allow surgeons to fully automate and customize critical planning and execution steps of refractive cataract surgery.”

About the LENSAR Laser System with Streamline™

Cassini-Lensar-Stream-line-workflowLENSAR Laser System is the first femtosecond laser cataract platform to establish a wireless integration protocol with preoperative diagnostic devices. The company is initiating this capability with the Cassini Corneal Shape Analyzer enabling for the wireless transfer of data from pre-operative corneal measurements to the LENSAR Laser System. This new integration eliminates potential errors that can occur from manual entry of data from the device used in the pre-operative and surgical planning process. The integration with Cassini enables the capture of preoperative iris registration data and maps it to the image of the eye obtained under the laser at procedure time, eliminating the need to manually ink mark the eye to identify and adjust for the cyclorotation that may occur when a patient is reclined during surgery.

“Creating an integrated technology approach to the femtosecond cataract procedure is something we refractive cataract surgeons have been waiting for, and it doesn’t surprise me at all that LENSAR was the company to get it done,” said Jonathan Solomon, M.D. surgical/refractive director at Solomon Eye Associates in Maryland. “I anticipate LENSAR’s Streamline will improve not only OR efficiency and patient experience during the procedure, but may also improve outcomes by minimizing the human factor inherent in manual data input or physically marking the eye pre-operatively.”

Additionally, for the first time surgeons have access to an arcuate incision planning table on the laser that includes parameters to define the location, depth and extent of the surgeon’s intended arcuate incisions based on individual patient biometric measurements and other factors defined by the surgeon. The arcuate incision planning capability allows surgeons to retain their plan preferences for later use, increasing surgical operating room efficiency.

The Streamline upgrades also introduce integrated cataract density imaging, which automatically categorizes the cataract to pre-programmed surgeon-customized fragmentation pattern depending on the density of the cataract and allows the surgeon to automatically isolate fragmentation to the nucleus. This first-in-market innovation may have a positive impact on efficiency and procedure time.

“LENSAR has given the reigns to the surgeon to make the laser-assisted refractive cataract procedure customized to both patient and surgeon’s needs,” said Robert Weinstock, M.D., director of cataract and refractive services at the Eye Institute of West Florida and The Weinstock Laser Eye Center. “The ability to preprogram the laser just one time with a surgeon’s specific preferences for fragmentation patterns based upon an automated cataract density analysis and customized arcuate incision plans may increase the efficiency and accuracy for every procedure thereafter, enhancing patient comfort and, ultimately, visual outcomes.”

Streamline upgrades including the arcuate incision planning, cataract density imaging and customized fragmentation patterns will be made available to all LENSAR users. The full Streamline technology suite will be available to practices currently using both the LENSAR Laser System and the Cassini Corneal Shape Analyzer.

LENSAR has placed more than 140 systems with customers around the world since its introduction in July of 2012, and the system has been used in nearly 60,000 cataract surgery procedures.

About LENSAR, Inc.

LENSAR, Inc., is a global leader in next generation femtosecond laser technology for refractive cataract surgery. The LENSAR Laser System offers cataract surgeons precision, accuracy, and efficiency while optimizing overall visual outcomes. LENSAR’s proprietary Augmented Reality technology — reconstructed 3-D imaging, measurement, and guidance system — offers quick and easy patient docking and provides high-resolution ocular images in a single scan. This technology facilitates enhanced procedure outcomes by allowing the physician to develop individualized treatment plans including precise laser delivery and efficient lens fragmentation that can reduce, and potentially eliminate, phaco energy. The LENSAR Laser System also offers the industry’s smallest laser footprint and thoughtful ergonomic design that accommodates most operating rooms.

With the recent approval of five application upgrades, offered as Streamline™ upgrade, the LENSAR laser cataract system becomes the first to offer automation and customization of essential steps of the refractive cataract surgery procedure. The LENSAR Laser System, has been cleared by the FDA for anterior capsulotomy, lens fragmentation, and corneal and arcuate incisions. For other indications it is an investigational device limited by U.S. law to investigational use only. For more information, please visit

LENSAR Receives FDA Clearance of Five New Performance Application Upgrades to the LENSAR Laser System. (2015, April 1). Retrieved March 29, 2016, from

Cassini Banner 4

DR KOCH_head shot1

“Cassini is a better alternative for toric IOL planning and, as such, stands to pave the way for surgeons who have been hesitant to impant these lenses.”

Douglas Koch, M.D.
Baylor College of Medicine, Houston, TX, USA

DR SOLOMON_head shot2

“With Cassini preoperative planning, you can confidently treat your patient’s cataract with toric IOLs and provide precise astigmatism correction in a single procedure.”

Jonathan Solomon, M.D.
Solomon Eye Associates, Bowie, MD USA


“Superior in central corneal measurement to Placido and Scheimflug in case of high irregularity.”

A. John Kanellopoulos, M.D.
Laser Vision Eye Institute, Athens, Greece
New York University Medical School, New York USA

Dr Liz Yeu

“Following a nomogram would have led to a treatment of 2 to 2.5 D astigmatism, and would have resulted in a very unhappy patient.”

Elizabeth Yeu, M.D.
Virginia Eye Consultants, Norfolk, VA, USA